﻿window.SINGLE_TAB = "  ";
window.QuoteKeys  = true; //是否添加引号

function IsArray(obj) {
  return  obj && 
          typeof obj === 'object' && 
          typeof obj.length === 'number' &&
          !(obj.propertyIsEnumerable('length'));
}

function Process(){
  SetTab();
  var json = $("#RawJson").text();
  var html = "";

  try{

    if(json == "") {
        $("#Canvas").html('');
        return false;
    }

    var obj = eval("["+json+"]");
    html = ProcessObject(obj[0], 0, false, false, false);
    $("#Canvas").html("<PRE class='CodeContainer'>"+html+"</PRE>");
  }catch(e){
    alert("JSON数据格式不正确:\n"+e.message);
    $("#Canvas").html('');
  }
}

window._dateObj   = new Date();
window._regexpObj = new RegExp();

function ProcessObject(obj, indent, addComma, isArray, isPropertyContent){
  var html = "";
  var comma = (addComma) ? "<span class='Comma'>,</span> " : ""; 
  var type = typeof obj;
  if(IsArray(obj)){
    if(obj.length == 0){
      html += GetRow(indent, "<span class='ArrayBrace'>[ ]</span>"+comma, isPropertyContent);
    }else{
      html += GetRow(indent, "<span class='ArrayBrace'>[</span>", isPropertyContent);
      for(var i = 0; i < obj.length; i++){
        html += ProcessObject(obj[i], indent + 1, i < (obj.length - 1), true, false);
      }
      html += GetRow(indent, "<span class='ArrayBrace'>]</span>"+comma);
    }
  }else if(type == 'object'){
    if (obj == null){
        html += FormatLiteral("null", "", comma, indent, isArray, "Null");
    }else if (obj.constructor == window._dateObj.constructor) { 
        html += FormatLiteral("new Date(" + obj.getTime() + ") /*" + obj.toLocaleString()+"*/", "", comma, indent, isArray, "Date"); 
    }else if (obj.constructor == window._regexpObj.constructor) {
        html += FormatLiteral("new RegExp(" + obj + ")", "", comma, indent, isArray, "RegExp"); 
    }else{
      var numProps = 0;
      for(var prop in obj) numProps++;
      if(numProps == 0){
        html += GetRow(indent, "<span class='ObjectBrace'>{ }</span>"+comma, isPropertyContent);
      }else{
        html += GetRow(indent, "<span class='ObjectBrace'>{</span>", isPropertyContent);

        var j = 0;

        for(var prop in obj){

          var quote = window.QuoteKeys ? "\"" : "";

          html += GetRow(indent + 1, "<span class='PropertyName'>"+quote+prop+quote+"</span>: "+ProcessObject(obj[prop], indent + 1, ++j < numProps, false, true));

        }

        html += GetRow(indent, "<span class='ObjectBrace'>}</span>"+comma);

      }

    }

  }else if(type == 'number'){

    html += FormatLiteral(obj, "", comma, indent, isArray, "Number");

  }else if(type == 'boolean'){

    html += FormatLiteral(obj, "", comma, indent, isArray, "Boolean");

  }else if(type == 'function'){

    if (obj.constructor == window._regexpObj.constructor) {

        html += FormatLiteral("new RegExp(" + obj + ")", "", comma, indent, isArray, "RegExp"); 

    }else{

        obj = FormatFunction(indent, obj);

        html += FormatLiteral(obj, "", comma, indent, isArray, "Function");

    }

  }else if(type == 'undefined'){

    html += FormatLiteral("undefined", "", comma, indent, isArray, "Null");

  }else{

    html += FormatLiteral(obj.toString().split("\\").join("\\\\").split('"').join('\\"'), "\"", comma, indent, isArray, "String");

  }

  return html;

}

function FormatLiteral(literal, quote, comma, indent, isArray, style){

  if(typeof literal == 'string')

    literal = literal.split("<").join("&lt;").split(">").join("&gt;");

  var str = "<span class='"+style+"'>"+quote+literal+quote+comma+"</span>";

  if(isArray) str = GetRow(indent, str);

  return str;

}

function FormatFunction(indent, obj){

  var tabs = "";

  for(var i = 0; i < indent; i++) tabs += window.TAB;

  var funcStrArray = obj.toString().split("\n");

  var str = "";

  for(var i = 0; i < funcStrArray.length; i++){

    str += ((i==0)?"":tabs) + funcStrArray[i] + "\n";

  }

  return str;

}

function GetRow(indent, data, isPropertyContent){

  var tabs = "";

  for(var i = 0; i < indent && !isPropertyContent; i++) tabs += window.TAB;

  if(data != null && data.length > 0 && data.charAt(data.length-1) != "\n")

    data = data+"\n";

  return tabs+data;                       

}

function SetTab(){


  window.TAB = MultiplyString(2, window.SINGLE_TAB);

}

function MultiplyString(num, str){

  var sb =[];

  for(var i = 0; i < num; i++){

    sb.push(str);

  }

  return sb.join("");

}
